1998 buick century heat probelmes, only blows in speed 4......
 

I have a 1998 buick century. My heat only blows air on high. is there a part i can replace to make all the air speeds work? thanks

Sounds like a bad blower motor resistor. It's located on the blower motor, behind the glove box. There are plenty of videos on youtube showing how to remove and replace them.

Awesome, thanks!